UAE CMA Confusion: Fiduciary Duties & Treasury Bills

I am grinding through the revision for the UAE CMA module because I cannot compromise on my bonuses this year. The new regulatory framework has completely shifted how we handle custodial accounts for high-net-worth individuals, and the density of the IISI chapter on fiduciary duties is overwhelming. I am struggling to distinguish between the standard client instructions required by the CME-1 syllabus and the strict legal mutuality demands of the UAE FRR. If I do not master the distinction regarding who can act as witness for a client signature, I will miss critical questions that could cost my firm its regulatory license. Does anyone have a clear clarification on the deposit calculation downtime for treasury bills under the new safe custody rules? The study text seems to contradict itself on page 112 regarding the exact three-business-day window versus the twelve-month credit period mentioned in the regulatory updates. Passing is the only path to the next salary bracket.